Coupling.



P. F. LA GREE.

COUPLING. APPLICATION FILED MAY I5, 1914.

1,15AG1., Patented 001. 19, 1915.

.I r//47F///I 4 MAQ attorney,

coLUMBIA PLANOGRAPM co., WAsm-HGTON. D. c.

V narran srarns Parana* barren.

PAUL FRANCIS LA GREE, 0F CHICAGO, ILLINOIS.

Specification of Letters Patent.

Patent-ea oet. ia, i915.

Application le'd May 15, 1914. Serial No. 838,737. v

tion is to provide n'ovel and simplel means -of an effective character,"wherebyfthe members can be quickly coupled and detached, and

'when in coactingrelation, will be'secu-rely maintained in such relation.

` An embodiment of the invention that is at present considered preferable, is illustrated in the accompanying fdrawings, where1n Figure 1 is a side elevation of the coupling in assembled condition. Fig. 2 is a similar view at rightangles to Fig. 1. Fig. 3 isfa t longitudinal 'sectional' view, and Fig. t is a cross sectional view.l

`Similar reference numeralsY designa-te' corresponding parts in all the figures ofthe drawings. f

In the embodiment illustrated, the two members to be coupled are respectively designated 5 and 6,being tubular in form, and one having its boreat one end enlarged, as illustrated at 7. 4rThe coacting end of the' other y' 'member is externally tapered, vas illustrated S5. f l

atfS, `to fit therein.

One of the members, as 5,-is provided with.-

outstanding lugs 9, to whichare pivoted holding arms. Each of these arms consists of sections 10 and 11, the section 10 being bifurcated at one end to straddle the lug 9, as illustrated at 12, the said end and lug having a pivot 13 passed therethrough. vThe two'sections are adjustably connectedby a tively into the two sections.

bolt 14 having reverse threads on `its `opposite ends, said ends being screwed respec- The central portion of the bolt is angular in cross section, as illustrated at 15 to aord a head for the application of a wrench vor other device. Lock nuts 16 are employed for preventing the accidental turning of the bolt. The section 6 is provided with oppositely disposed outstanding projections or lugs 17 y that are rounded and are adapted to pass into and through sockets 18 formed in the sections 11 of the arms. The two members 5 and 6 are thus adjustably connected.

Inorderto retain the parts in their operative position, a ring 19 is slidably and rotatably-mounted on the member 6, its sliding movement being limited by stopsA 2O and 21 located on opposite sides of said ring. This ring is provided with an internal socket groove 22 that has a reduced portion 23 hopening through one side of thering and having a pair of 'opposite enlargements 24. The-free ends of the holding arms are provided with outstanding transversely dis-r posed ears 25 that are karranged to pass through the enlargements 24 when the latter are registered therewith and the ring is moved longitudinally toward the arms. Vhen said ears 25 are within the socket groove 22, the ring can then' be rotated until the enlargements 24 are out of register with the ears v25.. The rotary movement of the ring is limited by internal stops 26 that abut against said ears. y

It is believed the manner of operating the coupling will 'be obvious. Assuming the parts in' assembled relation, as illustrated, it is only necessary to rotate the ring 19 'until the enlargements 24: are in line with the'ears 25, when said ring can be moved rearwardly, thereby releasing the arms. These arms can then be swung outwardly,

and the coupling members separated.l A reverse Yoperation locks the members together and maintains them effectively in assembled.

relationnBy having the arms eXtensible, all wear and slight differences between the parts ,can be provided for, thuslinsuring a tight:

]oint' between the `members.

-From the foregoing, it is thought that the construction operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction vmay be resorted to without departing from the spirit or sacricing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A coupling of the character set forth, comprising coacting tubular members, an arm pivoted to one member and detachably interlocking with the other member to hold toV members against relative longitudinalV movements, and a locking device for the Y arm,` slidably mounted on said other member, said arm and device being provided With interlocking means for retaining said device against longitudinal movement'vvhen Hin locking position. Y A y 2.' A coupling of the character set forth, comprising coacting tubular members, ani

arm pivoted to one member, and'detachably interlocking With the other member, saidV arm being provided Witha lug, ,andv a device Y slidably and rotatably mounted on said other member, to interlock with saidA lug on Vthearm and hold the latter in its interlocking relation.

3. A coupling of the character setforth, comprising coacting tubular members, an arm movably mounted on onefmember said arm being provided with a lug and detachably interlocking With the other member, Vand a ring having an internal socket groove opening through one side, said ring being slidable longitudinally of the member over the arm and rotatable to interlock With the lug on said arm.

4. A coupling of the character'set forth, comprising coacting tubular members, an

arm pivoted' to fone member and having an interlocking engagement with Ythe otherY member, said arm having anoutstanding ear on its free end, anda ring having an internaly socket groove opening through one vside and having an enlargement at one point to receive the ear, said ring being slidable longitudinally ,of the memberv over the armv and being rotatable to interlock With said ear.

5. A coupling of the character set forth,

comprising coacting tubular members, anV

arm pivoted to one member andhaving a socket, an outstanding ...projection on Ythe other member that is received by the socket, f

said arm having an outstanding earon its free end, a ring slidably vand rotatably mounted on said other member and having` van internal socket groove openingithrough'- one side to permitV theV passage of the arm,

said groove having an enlargement at one point to permit the passage of the ear, a stop Within the socket groove adapted to, abut 'I Amovementof the ring. f Y l In testimonyivvhereof' affix mysignature against the arm and limit n the rotatable l -f movement'of the'v ring, and stopsmounted on said other member on opposite sides ofV thev ring tov limit its sliding movement.

adjustab'ly threaded into the sections' for holding them at different distances apart,

means on the other coupling memberfor d etachably interlocking with the arms,l anda f retaining ring slidably vand rotatably mounted on said other vmember and engaging the arms'to hold themlin ltheir inter-` locking relation.`

7. A couplingof the character comprising coacting tubular members, `an outstanding lug carried by one member, an

A arm movably mounted on the othermemberand detachably interlocking with said lug,

a ring slidably mounted on thefirst-rmen# tioned membertov engagev saidzarm and holdA the samein its interlocking relation With said lug,.and stops mounted on the first-,- mentioned member on oppositeside's Iof the.

ring to limit thesliding movements;y of theVV latter, one vof saidstops` being located betweenthering endthelug comprisingcoacting tubular members, an

arm pivoted to one .member and having a Y Y socket, an Voutstanding proJection on the said arm having an( outstandingear on its` 1 other member thatis received byithesocket,

free and,y a ring -siidabiyhand rotar-,ably i mounted on said othermember and 4having an internal socket groove"V opening through Y oneside,tofpermity thepassage of the arm,

said groove having anjenlargementfat vone point to permit the passageof thelear, and Y astop Within the socket; groove adapted toV abut againstthe arm and limit therotatable in presenceaof two Witnesses. c

C. MoNiiiL,` H. R. JoHNsoN.

Copies of this patent ma'y beobtained for ive'ceiits each, byl addressing their.Goinniissionenof Patents.,

' Washingtom ID. C.

y V8O 8. Acoupling ofthe '.charactersetv`forth, 

